Google is making life easier for developers with its latest Gemini 2.5 release. The new implicit caching feature automatically detects repeated prompts and stores them so you’re only charged once for recurring content.

This shift from a manual to an automated caching process could trim costs by as much as 75% compared to the old explicit method. For best results, Google recommends structuring your prompts with stable instructions upfront, followed by variable user inputs like questions.

The feature activates when prompts hit 1,024 tokens on Gemini 2.5 Flash and 2,048 tokens on the Pro versions. If you need more details or practical tips, the Gemini API documentation has you covered.